Pleora Technologies iPORT CL-Ten, User Manual

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15 Programmable Logic Controller (PLC)
Equation Definitions
The sections provide descriptions for the elements of equations:
Equations
Equations are written using the following format:
Variable out = expression
Expressions
An expression can be made up of the following elements:
• Primary operator
• Unary operator
• Binary operator
Primary Operators
A primary operator can be made up of the following elements:
•
Literal Operator
•
Variable_In
•
Expression
Literal Operators
The following table provides descriptions for Literal operators.
Unary Operators
The following table provides descriptions for unary operators
You can use an equation empty by using NULL in place of the equation.
Table 5: Literal Operator Descriptions
Operators (Increasing Precedence) Description
1 True / On
0 False / Off
Table 6: Unary Operator Descriptions
Operator Description
! Logical Negotiation